Stem-winding attachment for watches



(No Model.) 2 SheetsSheet 1.

G. B. HART.

STEM WINDING ATTACHMENT FOR WATCHES.

No. 325,536. PatentedSept. 1, 1885.

Z W w MW m (No Model.) 2 Sheets-Sheet 2.

G. E. HART.

STEM WINDING ATTACHMENT FOR WATCHES.

No. 325,536. m Patented Sept. 1', 1885.

, said plate separated from each other.

UNITED] STATES PATENT Orrics.

GEORGE E. HART, OF VVATERBURY, CONNECTICUT.

STEM-WINDING ATTACHMENT FOR WATCHES.

SPECIFICATION forming part of Letters Patent No. 325,536, datedSeptember 1, 1885.

Application filed June '2, 1884. (No model.)

To all whom it may concern:

Be it known that I, GEORGE E. HART, of Waterbury, in the county of NewHaven, and in the State of Connecticut, have invented certain new anduseful Improvements in Stem- WVinding Attachments for WVatehes; and I dohereby declare that the'followin g is a full, clear, and exactdescription thereof, reference being had to the accompanying drawings,in which Figure 1 is a perspective view of the pillarplate of my watchfrom the dial side, the dial being removed. Fig. 2 is a like view of thesame from the'opposite side. Figs. 3 and 4 are respectively perspectiveviews of the in-' ner faces of the inner and outer sections of Fig. 5

. is a like view, enlarged, of parts of the hand setting andspring-winding mechanism separated from each other. Fig. 6 isaperspective View of the lower side of the yoke and pushstud. Fig. 7 is aplan view, from the lower side, of said yoke and its wheels, the fulllines showing the normal position of the winding wheel and the dottedlines its position when turned backward and tripping over the teeth ofthe winding-arbor wheel. Fig. 8 is a plan view of said mechanism ascombined with the pillar-plate, and normally in engagement with thewinding-arbor wheel, a portion of the outer section of said plate beingbroken away; and Fig. 9 is a like view of the same with said winding andsetting mechanism in engagement with the dial-wheels.

Letters of like name and kind refer to like parts in each of thefigures.

The design of my invention is to increase the efficiency, to simplifythe construction, and to lessen the cost of pocket time-pieces; to whichend'said invention consists, principally, in a watchmovement in whichthe stem-winding and hand-setting mechanism is contained within aninterior recess in a sectional plate, and is held in position therein bythe union of the sections, substantially as and for the purposehereinafter specified.

It consists, further, in a stem-winding and hand setting mechanism forwatches, in which the yoke that forms a pivotal bearing for the windingand setting wheels, the ratchetspring, and the pushspring areconstructed from one piece, substantially as and for the purposehereinafter set forth.

hand-setting attachment for watches, in which the winding-wheel pivotedthereto is held-in yielding contact with its hearing by means of aspring, substantially as and for the purpose hereinafter specified.

It consists, finally, in a stem-winding and hand-setting mechanism forwatches, in which the push-stud is made separable from the yoke, and isadapted to be connected therewith after the movement is in the case,substantially as and for the purpose hereinafter shown.

In the annexed drawings, A. and B represent the outer and innersections, respectively, of a watch-plate, which sections are united upona plane that is parallel with their outer faces, and when thus unitedhave the external shape and size of an ordinary solid watch-plate.

Within the contiguous faces of each section is formed a recess, a or b,that coincides with a like recess in the opposite section, andatitscenter is provided with an axial boss, a orb, which has its top(lush with the general surface of its section, and when said sectionsare combined abuts against the corresponding boss of theoppositesection.

Pivoted upon the combined bosses a and I) is a yoke, C, which, as seenin Figs. 5 and 8, has an Lshape in plan view, and is pivoted attheintersection of its arms. At the end of one arm is provided a stud,0, upon which is jonrnaled a toothed wheel, D,while within the end ofthe opposite arm, at its outer side, is formed a half-round recess, 0,that is inclosed by means of a spring, 0'. Said spring extends from thecenter of said yoke along the open. side of said recess, and is formedof or from the same piece of steel as the yoke.

Within the recess 0 is journaled an axial stud, c, that projectsdownward from a toothed wheel, E, which has substantially the size ofthe wheel D. Said axial stud or journal is held with a yielding pressurewithin said re cess by means of the spring 0 and may be moved outwardfrom the same a certain distance, for purposes hereinafter described.

Between the wheels D and E is a toothed wheel, F,which meshes with thesame, is journaled upon the bosses a and b, and is driven by means of acrown-wheel, H, upon the arbor h, within the stem. Said wheel E mesheswith a wheel, I, upon the barrel-arbor K, and is held in engagementtherewith by means of a spring, 0 that forms part of and projects fromthe inner side of the same, near the recess c, to or beyond the oppositeend of said yoke, and at its outer free end engages with a stud, b,which projects upward from the plate B \Vhen the Wheel E is rotated inthe direction necessary to wind the mainspring of the watch, asindicated by the arrow, it will remain in engagement with and rotate thewheel I; but when turned in an opposite direction the outward pressureupon said wheel E will overcome the force of the spring 0*, and willforce the former outward suffieiently'to cause its teeth to slip overthe teeth of .said wheel I, the arrangement enabling said wheel E towind said mainspring when rotated in one direc' tion, and to act as aratchet when rotated in an opposite direction.

The wheel D is contiguous to one of the dial wheels L, and a slightmovement of the yoke 0 upon its axial bearing will cause said wheels tomesh, so as to enable the hands to be set through the stem. Suchmovement is effected by means of a push-stud, M, which engages with thestud 0 below the pillar-plate, and from thence extends outward through asuitable opening in the case-center.

In order that the push-stud M may be detached from the movement andplaced in position after said movement is within the case, its inner endis forked and provided with a bearing, on, that is adapted to embracethe necked projecting portion of the stud c. Said bearing is formedwithin the inner contiguous edges of the divided rim end of said stud,and in order to engage or disengage said parts sufficient force must beused in moving said stud longitudinally to cause its forks to springapart, as in case of the placing of a clothes-pin over a clothes-line.

This construction enables the movement to be as easily placed in orremoved from position within the case as though not provided withstem-setting mechanism, and materially lessens the time and laborrequired for such operations.

Having thus fully set forth the nature and merits of my invention, whatI claim as new 15-?- 1. In a watch-movement, in combination with apillarplate which is composed of two disks that are adapted to be placedone upon the other to form a plate of ordinary form, and are providedwithin their contiguous faces with coinciding recesses, which togetherconstitute one interior recess, stem winding and setting mechanismplaced within said interior recess, substantially as and for the purposespecified.

2. In a watch-movement, in combination with a pillar-plate which iscomposed of two disks that are placed one upon the other to form a plateof ordinary form, and are provided within their contiguous faces with aninterior recess,-stem winding and setting mechanism which is placedwithin such recess, and is held in position therein by the union of saidplate-sections, substantially as and for the purpose shown.

3. A stem-winding and hand-setting mechanism for watches, in which theyoke that forms a pivotal bearing for the winding and setting wheels,the ratchet spring, and the push-spring are constructed from one piece,substantially as and for the purpose set forth.

4. A yoke having a ratchet-spring attached to or forming a part of thesame, substantially as and for the purpose shown.

5. A yoke having a push-spring attached to or forming a part of thesame, substantially as and for the purpose shown and described.

6. A stem-winding and hand-setting attachment for watches, in which thewinding-wheel, pivoted thereto, is held in yielding contact with itsbearing by means of a spring, sub stantially as and for the purposespecified.

7. Astem-winding and hand-setting mechanism for watches, in which thepush-stud. is made separable from the yoke, and is adapted to beconnected therewith after the movement is in the case, substantially asand for the pun pose shown.

In testimony that I claim the foregoing I have hereunto set my hand this15th day of March, 1884.

GEORGE E. HART.

\Vitnesses:

Gno. S. PRINDLE, E. L. BRONSON.

